Harrow



(ModeL) I B. JONES.

' u BY W ATTORNEYS?" UNITED STATES PATENT OFFICE.

BENJAMIN JONES, OF ORANGE, ILLINOIS.

HARROW.

SPECIFICATION forming part of, Letters IPatent No. 244,808, dated July26, 1881. Application filed May 27, 1881. (Model) I Illinois, haveinvented certain useful Improvements in Harrows, of which thefollowingis a specification.

Figure 1 is 'a plan view of my improvement. Fig. 2 is a sectional sideelevation of the same, taken through the line ac m, Fig. 1.

Similar letters of reference indicate-corresponding parts. I

The object of this invention is to promote convenience and efficiency inharrowing by making the harrows self-cleaning.

The invention consistsin constructing a harrow of a series of longstationarybeams, a series of short stationary beams'interposed betweenthe rear parts of the long beams, the connecting cross-bars, thecrank-rods pivoted to the stationary beams, the movable beams pivoted tothe cranks of the crank-rods, and the teeth, whereby the movable beamswill be raised from and lowered to the ground to push trash off thebarrow-teeth, and thus keep the harrow clean, as will be hereinafterfully described. l

A are the long beams of the barrow-frame, which are placed parallel witheach other and are connected attheir front and rear ends by cross-barsB. More or less beams A can be used, according as the harrow is to bewider or narrower.

To the rear cross-bar, B, midway between the beamsA, are attached therear ends of the short beams O, which are a little less than half thelength of the long beams A.

In bearings in the forward parts of the long beams A works a rod, 1),upon which, in the space between the beams A, are formed cranks E. Thecranks E project at difl'erent angles, giving to the series of cranks aspiral arrangement. In hearings in the rear partsof the long beams A,and in the middle parts of the short beams G, works a rod, F, uponwhich, in

the spaces between the long beams A, are formed pairs of cranks Gr uponthe opposite sides of the short beam 0. The cranks of each pair upon theopposite sides of the short beam 0 are parallel with each other, and thepairs of the cranks project at different angles, giving to the series ofpairs a spiral arrangement.

To each crank E are pivoted the forward ends of two beams, H, whichincline from each other to the rearward, and their rear ends are pivotedto the cranks G upon the opposite sides of the short beams C.

To [the beams A G H are attached harrowteeth I. With this arrangement,as the barrow is drawn forward, the teeth of the movable beams H. comein contact with the ground successively in frontof the teeth of thestationarybeams A O, and remain in contact with the ground until theteeth of the said stationary beams have passed them. This movement turnsthe crank-rods D F and brings the teeth of the next pair of movablebeams in contact with the ground, and so on. These movements push theweeds and other trash off the teeth of the stationaryibeams, whichtrash, as the movable beams rise, is left upon the ground, so that thebarrow-teeth will be kept clear of trash.

This construction can also be applied to cultivators and thecovering-barrows of grain- Idrills with equal'advantage.

B, of the crank-rods D F and the movable beams'H, substantially asherein shown and described, whereby the barrow-teeth will be kept clearof trash, as set forth.

3. In a harrow, the combination, with the long beams A and the movablebeams H, of the crank-rod F, having its cranks Gr arranged in pairs,substantially as herein shown and described, whereby the short beams Gcan be used between the rear parts .of the long beams and thebarrow-teeth brought closer together, as set forth. w

BENJAMIN JONES.

Witnesses:

H. GASAWAY, J OHN GAMBLE.

